I agree that end to end demand may not be that high as techies(major travellers in this route) prefer to travel overnight, but traffic does exist though its split, say between SC-KRNT/DHNE/GY and GY/KRNT/DHNE-DMM/SBC.
As you have mentioned KSK does'nt really serve the purpose, and APSRTC buses chala full ga velthayi ee route lo..